EP1038771A1 - Conduit modulaire de prise d'air pour véhicule - Google Patents

Conduit modulaire de prise d'air pour véhicule Download PDF

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Publication number
EP1038771A1
EP1038771A1 EP99302211A EP99302211A EP1038771A1 EP 1038771 A1 EP1038771 A1 EP 1038771A1 EP 99302211 A EP99302211 A EP 99302211A EP 99302211 A EP99302211 A EP 99302211A EP 1038771 A1 EP1038771 A1 EP 1038771A1
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EP
European Patent Office
Prior art keywords
intake duct
duct
aircraft
vehicle
air intake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99302211A
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German (de)
English (en)
Inventor
designation of the inventor has not yet been filed The
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems PLC
Original Assignee
British Aerospace PLC
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Filing date
Publication date
Application filed by British Aerospace PLC filed Critical British Aerospace PLC
Priority to EP99302211A priority Critical patent/EP1038771A1/fr
Publication of EP1038771A1 publication Critical patent/EP1038771A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles

Definitions

  • This invention relates to the field of vehicle propulsion systems and more specifically, but not exclusively, to engine intake ducts.
  • Patent application no. WO 97/22516 describes a method of assembling an aircraft from a plurality of modular structural components.
  • This document discloses an aircraft having a common wing component and common propulsion support frame component, such that several variants of the aircraft, each variant having the different structural qualities necessary to perform different roles, could be assembled from a basic number of common components.
  • Other modular structural components, such as flaps, may be specific to a particular variant of aircraft, and may be fixed to the common basic structure during assembly of that variant. This commonality of airframe parts allows a substantial reduction in the cost of designing and manufacturing aircraft variants requiring different structural qualities in order to fulfil their different roles.
  • US Patent 3,640,492 teaches one aircraft structure which is adapted to house a variety of mission specific modules. These modules are interchangeable between the same type of aircraft and can be rapidly replaced in the event of damage or changed if the aircraft needs to be reconfigured for a different mission. Each module contains a different avionics mission system which is electrically connected to the main control system of the aircraft when the module is mechanically installed.
  • mission systems consist primarily of avionics systems, such as laser rangers for weapon delivery, which are designed to carry out specific missions
  • known aircraft systems are integral to the aircraft and are usually necessary for the general functioning of the aircraft, whatever the mission.
  • the integration and final assembly of aircraft systems such as environmental control systems (ECS), engine systems and fuel systems is arguably the most time consuming and expensive area of final assembly, as well as proving time consuming and expensive in subsequent repair and maintenance, therefore much research has been conducted into the possible reduction in complexity of such systems.
  • ECS environmental control systems
  • modular avionics systems allow one aircraft to fulfil a variety of roles, several variants still must be manufactured, for use in, for example, long range missions or those missions requiring a faster, more manoeuvrable aircraft, where it is the integral aircraft systems that need to be varied.
  • Patent application No. WO97/22516 describes the building of several aircraft variants using a basic set of common structural components, to reduce the number of different structural components needed to build the family of aircraft. Variant-specific components need to be fixed to the common basic aircraft structure, and these components are also designed to meet the structural requirements of that particular variant.
  • Patent application No. W097/22516 particularly discloses three types of powerplant support systems designed to meet the different propulsion system requirements of three aircraft variants.
  • the powerplant support systems have several components in common, and are designed to form part of the structure of the variant in which they are installed, not being readily detachable.
  • the present invention seeks to reduce the need for several variants of aircraft for adaptation to different roles and further seeks to reduce the cost and time factors associated with the assembly, repair and maintenance of aircraft propulsion systems.
  • a modular air intake duct system for a vehicle comprising:
  • said at least one intake duct is demountably located within a structural framework of the vehicle and does not form substantially any part of the external surface of the vehicle.
  • the external surface of the vehicle comprises at least one detachable panel adjacent said at least one intake duct for allowing the rapid installation and removal of said at least one intake duct.
  • said at least one intake duct comprises three modules, these being a rearward duct module, a central duct module and a forward duct module.
  • the structural framework of the vehicle advantageously comprises at least one shear web, said at least one shear web being load bearing and extending substantially along the length of the vehicle.
  • Said at least one intake duct is preferably adapted to be attached to said at least one shear web, using said attachment means.
  • the attachment means may comprise spigots and brackets.
  • said at least one intake duct has spigots fixed thereto.
  • the attachment means further comprises frame members.
  • the frame members preferably comprise at least two portions, each portion being adjacent a shear web and extending in a direction perpendicular to the length of the shear web.
  • Each portion is advantageously detachably fixed to a shear web, and may be fixed using brackets.
  • the frame members preferably allow an intake duct to be correctly positioned between and adjacent their two portions.
  • the frame members are advantageously adapted to hold the intake duct in a desired position, by means of the spigots fixed to the intake duct and brackets fixed to the frame members and the shear webs.
  • the frame members may be detached from the shear webs and may be replaced by frame members of a different size, to accommodate the new duct.
  • the modules of said at least one intake duct may be advantageously separately removable or installable, leaving the remaining duct modules in position.
  • the brackets are advantageously adapted to allow the spigots of each of the modules to be rapidly released.
  • a modular intake duct of a vehicle may be changed rapidly to accommodate repairs or a role change, by removing said at least one detachable panel and releasing the spigots of all or some of the modules of the duct then replacing these modules with different ones.
  • At least one powerplant of the vehicle may be changed for a particular mission, and at least one intake duct or module thereof may, in accordance with the invention, be changed to be compatible with the new powerplant.
  • a modular propulsion system comprising:
  • said at least one intake duct is demountably located within a structural framework of the vehicle and does not form substantially any part of an external surface of the vehicle.
  • an aircraft having a modular propulsion system comprising:
  • Figure 1 shows an isometric, exploded sketch of a modular propulsion system.
  • Figure 2 shows an isometric view of an internal structure of an aircraft showing parts of its propulsion system.
  • Figure 3 shows an isometric view of duct modules of the propulsion system of the aircraft shown in Figure 2.
  • Figure 4 shows an exploded isometric view of a duct module of Figure 3 ready for assembly with part of the airframe of Figure 2.
  • Figure 5 shows an isometric view of the duct module and airframe of Figure 4 when assembled.
  • Figure 1 shows a propulsion system having an engine 51 and a duct 19 for directing air to the engine 51.
  • the duct 19 is modular and comprises several sections which are connected together.
  • the duct 19 and engine 51 when assembled into an airframe, fit between shear webs 5, 7.
  • the duct 19 does not form part of the fuselage of the aircraft.
  • a panel 55 is fitted to the aircraft structure, below the duct 19, forming part of the fuselage on the underside of the aircraft.
  • a nosewheel module 57 is positioned between the front of the panel 55 and an intake 59.
  • a tailplane 53 is positioned to the rear of the panel 55.
  • Figure 2 shows part of an aircraft structure 1 with the outer skin removed to show the internal structure of the aircraft.
  • the aircraft structure 1 has a propulsion system 3 which comprises two similar intake ducts 19, 21 (only duct 19 has been shown for clarity) and two engines (not shown).
  • the duct 19 is modular, and comprises a rearward duct portion 13, a central duct portion 11 and a forward duct portion (not shown).
  • the duct 19 is positioned between shear webs 5, 7.
  • a similar duct (not shown) is positioned between shear webs 7, 9.
  • Frames 15 are attached to the shear webs 5, 7 and brackets 17 are demountably attached to the frames 15 for retaining the duct 19.
  • FIG 3 shows the two ducts 19, 21 ready for assembly into the aircraft structure 1 of Figure 2.
  • the ducts 19, 21 are modular and each comprises a rear duct portion 13, 23, a central duct portion 11, 25 and a forward duct portion 27, 29 respectively.
  • the ducts 19, 21 have identical central duct portions 11, 25 and identical rear duct portions 13, 23, which are interchangeable modules.
  • the forward duct portions 27, 29 however are different from each other, each being adapted to fit intakes of different shape.
  • the forward duct portions 27, 29 may be changed or removed for repair whilst leaving the central and rear duct portions in position, due to the modular nature of the propulsion system.
  • Figure 4 shows the central duct portion 11 of the duct 19 during assembly with the aircraft structure 1 of Figure 2.
  • Frames 15 are detachably fixed to the shear webs 5, 7 of the aircraft structure 1 as shown.
  • the central duct portion has four spigots 31, two at each end.
  • the duct portion 11 is raised up between the shear webs 5, 7 until it is adjacent the top portion 39 of the frames 15, and the spigots 31 are resting against the spigot holes 41 in brackets 43, 45.
  • Brackets 33 are then fixed into place on the shear webs 5, 7 to hold the spigots 31 and the duct portion 11 in a fixed position within the structure of the aircraft.
  • the brackets 43 have further spigot holes 47 for accommodating the spigots of a rear duct portion (not shown).
  • the brackets 45 have further spigot holes 49 for accommodating the spigots of a forward duct portion (not shown). In this manner the modular duct is assembled.
  • Figure 5 shows the central duct portion 11 of the duct 19 assembled within the aircraft structure 1.
  • the duct portion 11 is held between the shear webs 5, 7 adjacent the frames 15.
  • the four spigots 31 of the central duct portion 11 are held by brackets 43, 45, 33 as shown.
  • the brackets 43, 45 are attached to the shear webs 5, 7 and the frames 15, and the duct is now fixed in position within the airframe.
  • the brackets 33 To remove the duct portion 11, the brackets 33 must be removed from the shear webs 5, 7 allowing the duct portion 11 to be lowered down between the shear webs 5, 7.
  • the spigots 37 and the spigots 35 of the rearward duct portion 13 and the forward duct portion 27 can be seen, held by the brackets 43, 33 and 45, 33 respectively.
  • the modular duct described herein does not form an integral part of the aircraft structure, and is not adapted to be a part of the load bearing structure of the airframe.
  • the modular duct 19 may be replaced by a similar modular duct during repair, or a portion of duct 19 may be so replaced, quickly and easily.
  • the duct 19 may be replaced with another duct having different characteristics, of shape or size for example, to suit a different engine.
  • one or more portions of the duct 19 are removed as described earlier and the frames 15 holding these duct portions are then detached from the shear webs 5, 7.
  • the frames 15 are replaced by frames of a different size adapted to allow the new duct portions to be assembled with the aircraft structure.
  • an aircraft may be adapted to fulfil a different role through an engine and intake duct change. This allows one common airframe to be built, and a modular propulsion system to be assembled therein, to suit various missions, and so reducing the need for aircraft variants.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP99302211A 1999-03-23 1999-03-23 Conduit modulaire de prise d'air pour véhicule Withdrawn EP1038771A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99302211A EP1038771A1 (fr) 1999-03-23 1999-03-23 Conduit modulaire de prise d'air pour véhicule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99302211A EP1038771A1 (fr) 1999-03-23 1999-03-23 Conduit modulaire de prise d'air pour véhicule

Publications (1)

Publication Number Publication Date
EP1038771A1 true EP1038771A1 (fr) 2000-09-27

Family

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EP99302211A Withdrawn EP1038771A1 (fr) 1999-03-23 1999-03-23 Conduit modulaire de prise d'air pour véhicule

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EP (1) EP1038771A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640492A (en) 1970-02-19 1972-02-08 Northrop Corp Modular aircraft structures
DE2915008B1 (de) * 1979-04-12 1980-10-23 Messerschmitt Boelkow Blohm Verfahren zum Einbau eines Triebwerkseinlaufkanals in ein Flugzeug
DE3114101A1 (de) * 1981-04-08 1982-10-28 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "verfahren zum einbau von lufteinlaufkanaelen"
EP0441461A2 (fr) * 1987-10-27 1991-08-14 Suzuki Kabushiki Kaisha Système d'aspiration d'air adapté à un moteur de motocyclette
WO1997022516A1 (fr) 1995-12-15 1997-06-26 The Boeing Company Structure de base commune convenant a differentes versions d'aeronefs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640492A (en) 1970-02-19 1972-02-08 Northrop Corp Modular aircraft structures
DE2915008B1 (de) * 1979-04-12 1980-10-23 Messerschmitt Boelkow Blohm Verfahren zum Einbau eines Triebwerkseinlaufkanals in ein Flugzeug
DE3114101A1 (de) * 1981-04-08 1982-10-28 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "verfahren zum einbau von lufteinlaufkanaelen"
EP0441461A2 (fr) * 1987-10-27 1991-08-14 Suzuki Kabushiki Kaisha Système d'aspiration d'air adapté à un moteur de motocyclette
WO1997022516A1 (fr) 1995-12-15 1997-06-26 The Boeing Company Structure de base commune convenant a differentes versions d'aeronefs

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